* {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

a {
  text-decoration: none;
}

html,
body {
  height: 100%;
}

#box {
  display: flex;
}

.box-left {
  width: 375px;
  height: 941.2px;
}

.box-left img {
  width: 375px;
  height: 941.2px;
}

.box-right {
  flex: 1;
  background-color: #f7f7f7;
}

.box-right-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  font-size: 26px;
  font-weight: 500;
  color: #333;
  margin-bottom: 80px;
}

.nav-logo {
  display: flex;
  align-items: center;
}

.box-right-top .nav-logo img {
  width: 40px;
  height: 40px;
}

.box-right-top .nav-logo p {
  margin-left: 10px;
}

.nav-c {
  color: #838383;
  font-size: 14px;
}

.nav-c ul {
  display: flex;
  justify-content: space-around;
  align-items: center;
}

.nav-c ul li {
  margin: 0 10px;
}

.box-form {
  z-index: 1;
  position: relative;
  z-index: 20;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 450px;
  height: 600px;
  margin: 20px auto;
  border-radius: 10px;
  box-shadow: 0 20px 50px 0 hsla(0deg, 0%, 64%, 0.1);
  background-color: white;
}

.box-form ul {
  margin-top: 30px;
  margin-left: 47px;
}

.box-form ul li {
  float: left;
}

.box-form ul li a {
  display: block;
  margin: 10px 10px;
  font-size: 24px;
  font-weight: 900;
  color: #333;
  border-bottom: 4px solid #ff5c00;
}

.box-form ul li:nth-child(2) a {
  font-size: 22px;
  color: #bbbbbb;
  border-bottom: 0;
  font-weight: 400;
}

.saoma {
  z-index: 10;
  width: 64px;
  height: 64px;
  background: linear-gradient(45deg, transparent 45px, #ff5c00 0);
  position: absolute;
  top: 0px;
  right: 0px;
  border-radius: 5px;
  opacity: 0.4;
}
.saoma img {
  width: 40px;
  height: 40px;
  position: relative;
  left: 12px;
  top: 8px;
}
.saoma:hover {
  opacity: 1;
}

.box-form form {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
}

.box-form form div {
  width: 354px;
  height: 60px;
  margin: 0 auto;
  margin-top: 10px;
}

.box-form form div input {
  width: 100%;
  height: 80%;
  background-color: #f7f7f7;
  border: none;
  outline: none;
  font-size: 16px;
  text-indent: 2em;
}

input::-webkit-input-placeholder {
  color: #ccc;
}

.box-form .btn-login {
  width: 354px;
  height: 60px;
  line-height: 60px;
  text-align: center;
  background-color: #ff7e29;
  transition: all 0.4s;
  border: none;
  color: #fff;
  font-size: 16px;
  margin-top: 20px;
  margin-left: 47px;
  cursor: pointer;
}

.box-form .btn-login:hover {
  background-color: #fd9550;
}

.tips {
  height: 20px;
  color: #f04645;
  display: none;
}

#chk {
  width: 15px;
  height: 15px;
}